This is one of the best films .A. that have been shown this yearB. that have shownC. that

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(答案→)A. that have been shown this year
B. that have shown
C. that has been shown this year
D. that you talked
解析：句意：这是今年放映的最好的电影之一。这里是定语从句，先行词是films，关系词作主语时，谓语动词的单复数根据先行词的单复数来确定。又因为films与show之间是被动关系，故选A。